WO2010001374A2 - Système et procédé de diffusion d’un contenu multimédia par le biais d’un réseau de télécommunications - Google Patents

Système et procédé de diffusion d’un contenu multimédia par le biais d’un réseau de télécommunications Download PDF

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Publication number
WO2010001374A2
WO2010001374A2 PCT/IB2009/054204 IB2009054204W WO2010001374A2 WO 2010001374 A2 WO2010001374 A2 WO 2010001374A2 IB 2009054204 W IB2009054204 W IB 2009054204W WO 2010001374 A2 WO2010001374 A2 WO 2010001374A2
Authority
WO
WIPO (PCT)
Prior art keywords
data
multimedia
files
metafile
file
Prior art date
Application number
PCT/IB2009/054204
Other languages
English (en)
Other versions
WO2010001374A3 (fr
Inventor
Mohamed Eldjendoubi
François Jacono
Julien Letellier
Original Assignee
Renault S.A.S.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault S.A.S. filed Critical Renault S.A.S.
Publication of WO2010001374A2 publication Critical patent/WO2010001374A2/fr
Publication of WO2010001374A3 publication Critical patent/WO2010001374A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234309—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/70—Media network packetisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/2365—Multiplexing of several video streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4347—Demultiplexing of several video streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44016—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving splicing one content stream with another content stream, e.g. for substituting a video clip
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/488—Data services, e.g. news ticker
    • H04N21/4884—Data services, e.g. news ticker for displaying subtitles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643—Communication protocols
    • H04N21/64322—IP
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/85406—Content authoring involving a specific file format, e.g. MP4 format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/8543—Content authoring using a description language, e.g. Multimedia and Hypermedia information coding Expert Group [MHEG], eXtensible Markup Language [XML]

Definitions

  • the present invention relates to multimedia broadcasting systems, in particular broadcasting systems intended to broadcast an audio-video stream together with additional data such as texts or captions, in synchronism with the audio-video stream.
  • a blog is website maintained by a manager providing text, images and videos on particular topics.
  • the blog can be accessed using the network architecture of the company and, as a case maybe, through the internet network, and using standardized and locked employees computers having a special configuration.
  • Computer standardization simplifies the maintenance, software development and downloading, given the fact that nearly all the configurations are identical.
  • Computer control locking reduces the number of accessible technologies, since a software that is not beforehand compatible with the standard configurations cannot be installed.
  • open space offices or some workshops in a company factory or in a company dealer subsidiary prevent from accessing a blog content comfortably. This is in particular the case when the content access through the blog is provided by way of an audio or video channel. Sounds can disturb or annoy neighbors or, more simply, cannot be audible at all.
  • a displayed video content can be provided with textual data to highlight important information relating to the content shown.
  • subtitles are integrated in the multimedia file.
  • caption data are integrated in the multimedia file.
  • subtitles should be accessed in different languages. Accordingly, one video must be provided for each language, such that for each topic, a number of videos corresponding to the number of intended languages must be provided and stored.
  • VTS Video Tile set
  • joining steams audio, video, sub-titles, format, ...
  • VOB Video Object
  • the object of the invention is to overcome the drawbacks associated with the techniques according to the state of the art.
  • one object of the invention is to provide a multimedia broadcasting system in which it is possible to link data, such as caption data, to an audio and/or video content and permitting in addition to modify the displayed additional data without requiring to re-start the video stream.
  • a further object of the present invention is to provide a multimedia broadcasting system permitting to reduce the storage costs.
  • the invention thus proposes a system for broadcasting a multimedia content through a telecommunication network, said multimedia content comprising a stream of multimedia data and associated additional data to be broadcast together with the multimedia data, comprising means for selecting a first file containing said multimedia data and a second file containing said multimedia data, and means for merging the selected first and second files in a metafile having links to the selected first and second files.
  • the invention thus proposes a broadcasting technique permitting access through a telecommunication network to a multimedia data file, on the one hand, and additional data, such as text data, on the other hand, said multimedia data files and additional data files being separate and unconnected and being broadcast by streaming.
  • a streaming technology permits to deliver a multimedia content keeping contro l through control messages transmitted between the media player and the streaming server.
  • streaming servers open a conversation with the media player to transfer the multimedia content and to transfer control messages between the player and the server.
  • the broadcasting system further comprises first storage means for storing a set of a multimedia files and second storage means for storing a set of additional data.
  • the multimedia data comprise video and/or audio data.
  • Said additional data comprise, for example, a set of text data intended to be merged with selected multimedia data, said set of text data comprising caption data in different languages intended to be selectively merged with a selected multimedia data.
  • the broadcasting system may further comprise a user interface adapted to modify in real time a selection of said second file during streaming of the multimedia content.
  • the multimedia data comprises MPEG encoded data, such as data in the WMA ® or the WMV ® format.
  • the additional data may comprise data written under a structured markup language such as Synchronized Multimedia Integration Language (SMIL).
  • SMIL Synchronized Multimedia Integration Language
  • the metafile is an extensible Markup Language metafile such as an Advanced Stream Redirector (ASX) file.
  • ASX Advanced Stream Redirector
  • the invention provides a process for broadcasting a multimedia content through a telecommunication network, said multimedia content comprising a stream of multimedia data and associated additional data to be broadcast together with the multimedia data.
  • the process according to the invention comprises the following steps:
  • the multimedia data may comprise video and/or audio data.
  • said additional data comprise a set of text data comprising caption data in different languages, said selection step comprising selecting caption data in said languages for selected multimedia data.
  • the process may further comprise a step of changing the selected additional data during streaming.
  • the multimedia data comprises MPEG encoded data such as data in the WMV ® or the WMA ® format.
  • the additional data may in addition comprise data written under a structured markup language such as a Synchronized Multimedia Integration Language (SMIL).
  • SMIL Synchronized Multimedia Integration Language
  • the metafile may be an extensible Markup Language metafile such as an Advanced Stream Redirector (ASX) file.
  • ASX Advanced Stream Redirector
  • figure 1 illustrates the general architecture of a broadcasting system according to the invention
  • figure 2 illustrates the steps of the broadcasting process according to the invention
  • figure 3 shows the interface used to select the first and second files
  • figure 4 illustrates the merging step.
  • figure 1 illustrating the general architecture of a broadcasting system according to the invention.
  • This system is intended to provide access to a multimedia content through a telecommunication network 2, such as an internal telecommunication network of a company, to end user stations, such as 3 , constituted in the illustrated example by employees computers.
  • a telecommunication network 2 such as an internal telecommunication network of a company
  • the telecommunication network 2 is a Local-Area Network (LAN). It may use different protocols such as MMS ® (Microsoft Media Service”), a streaming protocol, RTSP ("Real-Time
  • Streaming Protocol allowing to control multimedia streams delivered on an IP network or HTTP ("Hypertext Transfer Protocol") commonly used to transfer information on internet.
  • the computers are provided with a digital media player adapted to be used for playing audio, video and viewing images, such as the media player WMP ® (Windows Media Player) developed by Microsoft ® .
  • WMP ® Windows Media Player
  • the broadcasting system essentially comprises a first server 4 intended to store files of multimedia data and a second server 5 intended to store additional data to be broadcast together with multimedia data stored in the first server 4.
  • the broadcasting system 1 is used to provide on a blog a multimedia content by streaming in the form of a audio and/or video content associated with captions that can be controlled during streaming.
  • the broadcasting system is intended to broadcast such a multimedia content by streaming in which it is possible to modify the language of the captions without requiring to re-start a video.
  • the invention also relates to broadcasting a multimedia content together with additional data that can be modified or deleted during broadcasting.
  • the first server 4 is used to store any multimedia stream entered by any authorized user, the second server being used to store captions or, generally speaking, text data, in all available languages.
  • the broadcasting system comprises in addition a third server 6 intended to provide access to any authorized user for editing a multimedia content by selecting one multimedia file from the first server 4 and one caption file from the second server 5 , and to merge the selected files in a metafile linking to the corresponding addresses at the first and second servers 4 and 5
  • the third server is also intended to be access by any end-user for playing a requested file and to permit to exchanging or to deleting captions during streaming.
  • the multimedia data stored in the first server 4 are MPEG encoded data, such as the compressed audio or video file format WMV ® ("Windows Media Video”) or WMA ® ("Windows Media
  • Audio developed by Microsoft ® .
  • Such formats are particularly useful to be played by a streaming using the above-mentioned Windows Media Player ® at the end user side.
  • any other appropriate multimedia container format can be used instead, such as the AVI ("Audio Video Interleave") or the
  • Realaudio or the Realvideo proprietary formats developed by RealNetworks ® are examples of Realaudio or the Realvideo proprietary formats developed by RealNetworks ® .
  • caption files are returned using a Structured Markup Language such as the so-called Synchronized Multimedia Integration Language (SMIL).
  • SMIL Synchronized Multimedia Integration Language
  • This language is commonly used for defining a markup for timing, lay out, animations, ... and is particularly intended to create documents using a text editor.
  • the thus created files contain the .smi extension.
  • the third server provides a tool used to link the WMV or WMA files, and the SMIL file. It is used to create an ASX file specifying the address of the selected file and linking said selected files.
  • ASX format is an XML metafile designed to store a list of multimedia files to be played or streamed on a streaming video server.
  • Each element of such an ASX file is commonly used to define a particular action to Windows Media Player ® .
  • the thus created ASX containing information linking the caption file and the multimedia file recovers the caption data in the selected language from the second server 5 to change accordingly the broadcast conditions as the video plays.
  • a video content is created on a specific topic by a film crew.
  • corresponding texts are edited using any editing software.
  • the thus edited captions or text data are also edited in a number X of languages (step 9).
  • the video and/or audio streams are encoded in the WMV format.
  • SAMI files having the extension .SMI, are created.
  • the thus created video file is stored in first server 4 and the SAMI files are stored in the second server 5 at specific addresses.
  • any authorized user after being lodged in an interface provided by the third server 6, chooses the video file saved in the WMV format and the subtitle file saved in the SMI format he wants to stream from the first and second servers 4 and 5.
  • an interface may be provided, said interface having a first icon I l for choosing a multimedia file in the first server 4 and selecting the address of the file therein, and a second icon 12 for choosing a corresponding subtitle file in the second server 5 and selecting the file address therein.
  • the third server 6 automatically associates the two selected files, and delivers an ASX file merging the two selected files and linking to their addresses in the first and second servers 4 and 5.
  • an ASX file F3 is created from a first multimedia file F l and from the second SAMI file F2.
  • the ASX file F3 contains links to the multimedia file and to the corresponding caption file in which are stored subtitles in all available languages.
  • an ASX file contains several sections, namely:
  • -"Title is a text string specifying the title for the ASX file
  • the ASX file thus points to two files, the one named "VIDEO" in the MMS format, and the other, named "CAPTION" in the SMIL format.
  • the HTTP links pointing on the web server are posted in the back office part of the blog, namely on the part accessed only by the persons authorized to enter a new multimedia content.
  • the thus created multimedia content is displayed in the front end of the blog, namely on the part that can be accessed by any end-user in the form of video and subtitles in two separate but synchronized windows.
  • the user can thus choose the language for the captions and, if required, modify or, on the contrary, cancel any subtitle during streaming (step 16).
  • the media player at the end-user side controls display of the selected caption data by reading the SAMI file data in the selected language.
  • the invention provides a broadcast system and a broadcast process permitting to store a unique video file, whatever the language to display is. Accordingly, a substantial storage profit in terms of space can be obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

La présente invention concerne la diffusion d’un contenu multimédia par le biais d’un réseau de communication, ledit contenu multimédia comprenant un flux de données multimédias et de données supplémentaires associées devant être diffusées conjointement avec les données multimédias. Le système utilisé comprend des moyens pour sélectionner un premier fichier contenant lesdites données multimédias et un second fichier contenant lesdites données supplémentaires, ainsi que des moyens pour fusionner les premier et second fichiers sélectionnés dans un métafichier doté de liens vers les premier et second fichiers sélectionnés. Le système comprend également un serveur de diffusion en continu (6) dans lequel est stocké le métafichier.
PCT/IB2009/054204 2008-07-04 2009-07-06 Système et procédé de diffusion d’un contenu multimédia par le biais d’un réseau de télécommunications WO2010001374A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08300231A EP2141882A1 (fr) 2008-07-04 2008-07-04 Système et procédé pour la diffusion d'un contenu multimédia via un réseau de télécommunication
EP08300231.1 2008-07-04

Publications (2)

Publication Number Publication Date
WO2010001374A2 true WO2010001374A2 (fr) 2010-01-07
WO2010001374A3 WO2010001374A3 (fr) 2010-03-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/054204 WO2010001374A2 (fr) 2008-07-04 2009-07-06 Système et procédé de diffusion d’un contenu multimédia par le biais d’un réseau de télécommunications

Country Status (2)

Country Link
EP (1) EP2141882A1 (fr)
WO (1) WO2010001374A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8885661B2 (en) 2009-09-02 2014-11-11 Apple Inc. MAC packet data unit construction for wireless system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007086644A1 (fr) * 2006-01-27 2007-08-02 Lg Electronics Inc. Procédé de traitement d'informations portant sur un objet en vue de présenter plusieurs sources
US20080129864A1 (en) * 2006-12-01 2008-06-05 General Instrument Corporation Distribution of Closed Captioning From a Server to a Client Over a Home Network

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007086644A1 (fr) * 2006-01-27 2007-08-02 Lg Electronics Inc. Procédé de traitement d'informations portant sur un objet en vue de présenter plusieurs sources
US20080129864A1 (en) * 2006-12-01 2008-06-05 General Instrument Corporation Distribution of Closed Captioning From a Server to a Client Over a Home Network

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"On-Demand Delivery of Web Video" INTERNET ARTICLE, [Online] 22 June 2006 (2006-06-22), pages 1-8, XP002507152 Retrieved from the Internet: URL:http://www.utexas.edu/web/video/publish/demand.php?e=0,5> [retrieved on 2008-12-08] *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8885661B2 (en) 2009-09-02 2014-11-11 Apple Inc. MAC packet data unit construction for wireless system

Also Published As

Publication number Publication date
EP2141882A1 (fr) 2010-01-06
WO2010001374A3 (fr) 2010-03-11

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